SUPERSTAR DJ Calvin ­Harris has built up a £6million ­fortune thanks to his money-spinning collaborations with chart-toppers including singer Rihanna.

The Dumfries-born dance star’s wealth from royalties is revealed in new accounts for his company CH Music.

His 2012 income has more than trebled from the previous year when his business had £2million in the bank.

The figures give an insight into Calvin’s assets – but his personal wealth, hidden from accounts, makes the 29-year-old superstar DJ and songwriter even richer.

Earlier this month, Calvin was named as the most successful ­songwriter in both the UK and the US for 2012 by magazines Music Week and Billboard.

His duet with Rihanna, We Found Love, hit the No1 spot in both the UK and the US and propelled him to global stardom.

The song made him the first Scot to top the American singles charts for 18 years and he followed it up with hits including Let’s Go, featuring Ne-Yo, We’ll Be Coming Back, featuring Example, and Sweet Nothing with Florence Welch.

A music industry source said: “Calvin has had massive success not just in the UK but in America over the last couple of years and this shows he is earning a fortune.

“He is also in demand for DJing gigs all over the world and is paid thousands for just a few hours of work.

“The accounts show he is also being wise by investing a lot of his fortune.”

The accounts, filed at ­Companies House, cover the period up to April 2012.

Speaking last year, Harris insisted money was not important to him and said he often remixed songs for ­artists for free in return for favours from them.

DJ Calvin Harris with Rihanna at the MTV music video awards (Image: Twitter)

He said: “I trade ­musical favours like cattle – I can’t remember the last time I did a remix for actual money. For me, I try to get a good swap.

“I remixed Spectrum for Florence Welch in exchange for a vocal part from her.

“It’s old-school but it worked out beautifully.

“Every remix I’ve done in the last couple of years has been a swap for some other musical thing.

“As for money, that’s not even a factor – you could not buy me to remix one of your records.

“But if it’s something I wanted to do, I honestly couldn’t care less if I got £5 or £50,000.”

Harris’s millionaire lifestyle is a far cry from his childhood.

He worked as a supermarket shelf-stacker after leaving school and started making music on a computer in his bedroom.